1116-41508 - A look at the bump-like knobs known as tubercles on the top of the head of a Humpback whale (Megaptera novaeangliae). Each protuberance contains at least one stiff hair. The purpose of these hairs is not known, though they may provide the whale with a sense of &#39;touch&#39;, Hawaii, United States of America

857-95062 - A man in a kayak is jumping into the water, while another man is watching. The emerald Soca near Bovec in Slovenia, originating in the Triglav mountains, is famous for all kinds of white water activities.